Astron. Astrophys. Suppl. Ser. 138, 563-564

Wide-field X-ray Monitor on HETE-2

N. Kawai¹ - M. Matsuoka¹ - A. Yoshida¹ - Y. Shirasaki¹ - M. Namiki¹ - K. Takagishi² - M. Yamauchi² - I. Hatsukade² - E.E. Fenimore³ - M. Galassi³

Send offprint request: N. Kawai

1 - RIKEN, The Institute of Physical and Chemical Research, 2-1, Hirosawa, Wako, Saitama 351-0198, Japan
e-mail: nkawai@postman.riken.go.jp
2 - Miyazaki University, Faculty of Engineering, Gakuen-kihanadai-nishi, Miyazaki 880-2155, Japan
3 - Los Alamos National Laboratory, MS D436, Los Alamos NM87545, U.S.A.

Received January 21; accepted March 10, 1999

Abstract:

The Wide-field X-ray Monitor on HETE-2 consists of four Xe-filled 1-D position-sensitive proportional counters. It is sensitive to X-rays between 2 keV and 25 keV, and is designed to localize gamma-ray bursts in real time with $\sim10^{\prime}$ accuracy. The design and basic characteristics of the detectors are presented.

Key words: instrumentation: detectors -- gamma-rays: bursts -- X-rays: general